/* ============================================================
   Akademika Semesta Nusantara — Components
   ============================================================ */

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  padding: var(--space-5) 0;
  transition: all var(--t-slow);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-3) 0;
  box-shadow: var(--shadow-md);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--c-white);
  transition: color var(--t);
  z-index: 10;
}

.nav.scrolled .nav__logo {
  color: var(--c-primary-dark);
}

.nav__logo-image {
  display: block;
  height: 34px;
  max-height: 34px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter var(--t);
}

.nav.scrolled .nav__logo-image {
  filter: none;
}

.nav__logo-image--footer {
  height: 42px;
  max-height: 42px;
  filter: brightness(0) invert(1);
}

.nav__logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: var(--text-lg);
  font-family: var(--font-display);
}

.nav.scrolled .nav__logo-icon {
  background: var(--c-primary);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav__link {
  position: relative;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius);
  transition: all var(--t);
  letter-spacing: 0.02em;
}

.nav__link:hover,
.nav__link.active {
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.1);
}

.nav.scrolled .nav__link {
  color: var(--c-gray-600);
}

.nav.scrolled .nav__link:hover,
.nav.scrolled .nav__link.active {
  color: var(--c-primary);
  background: var(--c-primary-light);
}

.nav__cta {
  margin-left: var(--space-4);
  padding: var(--space-2) var(--space-6);
  background: var(--c-white);
  color: var(--c-primary);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: all var(--t);
}

.nav__cta:hover {
  background: var(--c-accent);
  color: var(--c-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.nav.scrolled .nav__cta {
  background: var(--c-primary);
  color: var(--c-white);
}

.nav.scrolled .nav__cta:hover {
  background: var(--c-primary-dark);
}

/* ── Mobile Menu Toggle ── */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  z-index: 10;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: all var(--t);
  transform-origin: center;
}

.nav.scrolled .nav__toggle span {
  background: var(--c-gray-800);
}

.nav__toggle.open span:nth-child(1) {
  transform: rotate(45deg) translateY(5px) translateX(5px);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translateY(-5px) translateX(5px);
}

/* ── Mobile Menu ── */
.nav__mobile {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--c-bg-dark);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  transition: right var(--t-slow);
}

.nav__mobile.open {
  right: 0;
}

.nav__mobile a {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  color: var(--c-white);
  transition: color var(--t);
  position: relative;
}

.nav__mobile a:hover {
  color: var(--c-accent);
}

.nav__mobile a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transition: width var(--t);
}

.nav__mobile a:hover::after {
  width: 100%;
}

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: var(--radius-full);
  transition: all var(--t);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
  opacity: 0;
  transition: opacity var(--t);
}

.btn:hover::after {
  opacity: 1;
}

.btn--primary {
  background: var(--c-primary);
  color: var(--c-white);
}

.btn--primary:hover {
  background: var(--c-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background: transparent;
  color: var(--c-primary);
  border: 2px solid var(--c-primary);
}

.btn--secondary:hover {
  background: var(--c-primary);
  color: var(--c-white);
  transform: translateY(-2px);
}

.btn--accent {
  background: var(--c-accent);
  color: var(--c-white);
}

.btn--accent:hover {
  background: var(--c-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--ghost {
  background: transparent;
  color: var(--c-white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--c-white);
}

.btn--lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

.btn__arrow {
  transition: transform var(--t);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ── Cards ── */
.card {
  background: var(--c-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--t-slow);
  border: 1px solid var(--c-border);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--c-primary-100);
}

.card__image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  transition: transform var(--t-slow);
}

.card:hover .card__image {
  transform: scale(1.05);
}

.card__image-wrapper {
  overflow: hidden;
  position: relative;
}

.card__image-wrapper::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(0,0,0,0.05));
}

.card__body {
  padding: var(--space-6);
}

.card__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  line-height: 1.3;
  transition: color var(--t);
}

.card:hover .card__title {
  color: var(--c-primary);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--c-text-light);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--c-primary);
  transition: gap var(--t);
}

.card__link:hover {
  gap: var(--space-3);
}

/* ── Stats Counter ── */
.stat {
  text-align: center;
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-size: var(--text-sm);
  color: var(--c-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

/* ── Tag / Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
}

.badge--accent {
  background: var(--c-accent-light);
  color: var(--c-accent-dark);
}

/* ── Divider ── */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  border-radius: var(--radius-full);
  margin: var(--space-6) 0;
}

.text-center .divider {
  margin-inline: auto;
}

/* ── Footer ── */
.footer {
  background: var(--c-bg-dark);
  color: var(--c-text-on-dark);
  padding: var(--space-20) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

.footer__brand p {
  color: var(--c-gray-400);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  max-width: 35ch;
}

.footer__title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-gray-400);
  margin-bottom: var(--space-6);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--c-gray-300);
  transition: all var(--t);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__links a:hover {
  color: var(--c-accent);
  transform: translateX(4px);
}

.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.footer__social a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray-400);
  transition: all var(--t);
}

.footer__social a:hover {
  background: var(--c-primary);
  color: var(--c-white);
  transform: translateY(-2px);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--text-xs);
  color: var(--c-gray-500);
}

.footer__bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer__bottom-links a {
  transition: color var(--t);
}

.footer__bottom-links a:hover {
  color: var(--c-accent);
}

@media (max-width: 900px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 640px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* ── Page Hero (inner pages) ── */
.page-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--c-primary-900), var(--c-primary-dark), var(--c-primary));
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(200, 169, 81, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(13, 107, 75, 0.3) 0%, transparent 50%);
}

.page-hero__pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='m36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm-24 24v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.page-hero__content {
  position: relative;
  z-index: 2;
  padding: var(--space-32) 0 var(--space-16);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  margin-bottom: var(--space-6);
}

.page-hero__breadcrumb a {
  transition: color var(--t);
}

.page-hero__breadcrumb a:hover {
  color: var(--c-accent);
}

.page-hero__title {
  color: var(--c-white);
  margin-bottom: var(--space-4);
}

.page-hero__text {
  color: rgba(255,255,255,0.7);
  font-size: var(--text-lg);
  max-width: 55ch;
}

@media (max-width: 768px) {
  .page-hero__breadcrumb {
    display: none;
  }

  .page-hero__content {
    padding-top: calc(84px + var(--space-16));
    padding-bottom: var(--space-14);
  }

  .page-hero__title {
    max-width: 16ch;
    line-height: 1.15;
    margin-top: var(--space-16);
  }

  .page-hero__text {
    font-size: var(--text-base);
  }
}

/* ── Floating Geometric Shapes ── */
.geo-shape {
  position: absolute;
  border-radius: var(--radius-full);
  pointer-events: none;
}

.geo-shape--1 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(200,169,81,0.08), transparent 70%);
  top: -100px;
  right: -50px;
}

.geo-shape--2 {
  width: 200px;
  height: 200px;
  border: 1px solid rgba(255,255,255,0.05);
  bottom: -50px;
  left: 10%;
}

/* ── Form Elements ── */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-text);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--c-white);
  border: 2px solid var(--c-border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  color: var(--c-text);
  transition: all var(--t);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(13, 107, 75, 0.1);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--c-gray-400);
}

/* ── Loading / Spinner ── */
.loader {
  position: fixed;
  inset: 0;
  background: var(--c-bg-dark);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Marquee ── */
.marquee {
  overflow: hidden;
  white-space: nowrap;
  padding: var(--space-6) 0;
}

.marquee__inner {
  display: inline-flex;
  gap: var(--space-16);
  animation: marquee 30s linear infinite;
}

.marquee__item {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--c-gray-200);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.marquee__item .dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--c-primary);
  flex-shrink: 0;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ── Parallax Image ── */
.parallax-img {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.parallax-img img {
  transition: transform 0.1s linear;
  will-change: transform;
}

/* ── Tooltip ── */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  padding: var(--space-1) var(--space-3);
  background: var(--c-gray-900);
  color: var(--c-white);
  font-size: var(--text-xs);
  border-radius: var(--radius);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--t);
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-8px);
}

/* ── Responsive Two-Column Grid ─────────────────────────────
   Replaces inline style="display:grid;grid-template-columns:1fr 1fr..."
   that has no responsive override (found in index.html + profile.html).
   ──────────────────────────────────────────────────────────── */
.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

@media (max-width: 768px) {
  .two-col-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  /* Clip any absolute-positioned overlays (e.g. stat badges) that
     extend beyond the column edge on mobile to prevent horiz. scroll */
  .two-col-grid [style*="position:relative"],
  .two-col-grid [data-reveal] {
    overflow: hidden;
  }
}